Question

How can the mechanical advantage of a lever be increased?

A.
by applying the force farther from the fulcrum
B.
by making the lever shorter
C.
by moving the fulcrum away from the load
D.
by applying a larger force

Answer 1

The answer is; A

The force or weight and distance on both sides of the fulcrum is given by the following ratio;

MA = Fb/Fa = a/b (MA = Mechanical Advantage)

The greater the distance from the fulcrum on which force is applied to lift a load on the other side of the fulcrum, the less the effort required.